Current-induced composition gradients in molten AgNO/sub 3/-NaNO/sub 3/: a model system for the LiCl-KCL electrolyte of an Li/S battery

Journal Article · Fri Jan 01 00:00:00 EST 1982 · J. Electrochem. Soc.; (United States)

DOI:https://doi.org/10.1149/1.2123790· OSTI ID:5058358

Vallet, C E; Heatherly, D E; Sherman, R L; Braunstein, J

Composition gradients, in molten AgNO/sub 3/-NaNO/sub 3/ mixtures contained in silica frits, are produced by electrolysis between silver electrodes and analyzed by three methods: (i) in situ potentiometry, (ii) chemical analysis of sections of quenched electrolyte, and (iii) scanning electron microscopy with associated x-ray fluorescence spectroscopy. The composition changes are calculated a priori from transport and thermodynamic properties independently measured in the free melt and corrected for the porosity of the frits. Since the ion flows in AgNO/sub 3/-NaNO/sub 3/ are analogous to those in the LiCl-KCl electrolyte of Li/S batteries, the former system serves as a convenient model system for the mixed electrolyte of the Li/S battery. The predicted gradients are compared to the experimental data from the three methods. 25 refs.

• Research Organization: Oak Ridge Natl Lab, Tenn, USA
• OSTI ID: 5058358
• Journal Information: J. Electrochem. Soc.; (United States), Vol. 129:1
• Country of Publication: United States
• Language: English

Related Subjects

25 ENERGY STORAGE
LITHIUM-SULFUR BATTERIES
ELECTROLYTES
CHEMICAL COMPOSITION
ELECTRIC CURRENTS
LITHIUM CHLORIDES
MOLTEN SALTS
POTASSIUM CHLORIDES
SPATIAL DISTRIBUTION
ALKALI METAL COMPOUNDS
CHLORIDES
CHLORINE COMPOUNDS
CURRENTS
DISTRIBUTION
ELECTRIC BATTERIES
ELECTROCHEMICAL CELLS
HALIDES
HALOGEN COMPOUNDS
LITHIUM COMPOUNDS
LITHIUM HALIDES
METAL-NONMETAL BATTERIES
POTASSIUM COMPOUNDS
SALTS
250903* - Energy Storage- Batteries- Materials
Components
& Auxiliaries